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第二批选出的无性系的试验一、产量所有试验都割了六年胶。其中有两个试验割了七年胶。表1扼要地列出割胶头七年的产量。所有无性系和试验在割胶头六年的每公顷年平均产量为1544公斤,其中以PB233(1979公斤)最高,56A/137(1103公斤)最低。其他高产的无性系是PB235、243和RRIM712,其平均产量分别为1978公斤、1960公斤和1839公斤。每公顷产量在1600—1700公斤之间的是PB242(1638公斤)和PB253(1600公斤)。
The second batch of clones selected a trial, production of all tests have been cut six years of plastic. Two of the trials cut the gum for seven years. Table 1 summarizes the seven-year production of a tapping head. The annual average yield per hectare for all clones and trials over the six years of cutting head was 1,544 kg, of which the highest was PB233 (1979 kg) and the lowest was 56A / 137 (1103 kg). Other high-yielding clones were PB235, 243 and RRIM712 with average yields of 1978 kg, 1960 kg and 1839 kg, respectively. PB242 (1638 kg) and PB253 (1600 kg) yielding between 1600 and 1700 kilograms per hectare.